JewishCalc
The dates that hold a Jewish family together — a yahrzeit to remember, a bar or bat mitzvah to plan, candles to light Friday night. Built with warmth, checked against the Hebrew calendar down to the day. No signup, nothing sold to you.
Gift guides & Jewish makers
Beyond the calculators — The Shuk curates real Jewish-maker shops and gift guides for every occasion on this site (bar/bat mitzvah, Hanukkah, a new baby, a housewarming mezuzah), and Sweet Year Studio has printable holiday craft packs to make together.
JewishCalc may earn a small commission on some outbound links, at no extra cost to you. See our full disclosure.
Yahrzeit Calculator
Find the Hebrew date of a loved one's passing and the next 10 years of yahrzeit dates.
Bar / Bat Mitzvah Planner
From your child's birthdate to the exact Shabbat, the parsha they'll read, and a countdown.
Hebrew Birthday Converter
Find any Hebrew birthday, and when it lands on the civil calendar this year and next.
Shabbat Candle-Lighting Times
This week's candle-lighting and havdalah times for your city.
Omer Counter
Today's count between Passover and Shavuot, with the blessing and the full 49-day table.
Hanukkah Candle Calculator
Which night it is, how many candles to light, and the blessings with transliteration.
Jewish Year Converter
Convert between civil and Hebrew years in either direction.
About JewishCalc
JewishCalc is a set of free calculators for the dates that shape a Jewish family's year — from the joy of a bar or bat mitzvah years away to the quiet of a yahrzeit candle. Every tool runs in your browser; nothing you type is sent anywhere.
Hebrew calendar math is done through @hebcal/core, the same open-source library that powers hebcal.com — we don't compete with hebcal's excellent date conversion, we build the parent-facing planning and explanation around it: which parsha, what the blessing means, what to do next.
The whole spectrum of Jewish life is welcome here — Orthodox to secular, Ashkenazi, Sephardi, and Mizrahi, intermarried families, Jews by choice, grandparents and toddlers. Where custom diverges (a yahrzeit in a leap year, a bat mitzvah at 12 or 13), we show more than one answer rather than picking a winner for your family.